風ふう俗ぞく壊かい乱らん

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Meanings

noun

corruption of public morals; offense against public morality

yojijukugo (four-character idiom)

A formal, legalistic yojijukugo referring to acts that harm public decency or moral standards. Often used in legal contexts or discussions of obscenity laws.

その雑ざっ誌しは風ふう俗ぞく壊かい乱らんの疑うたがいで発はつ売ばい禁きん止しになった。
The magazine was banned on suspicion of corrupting public morals.